Rechargeable battery pack



FIG. 1 is a perspective view of the rechargeable battery pack;

FIGS. 2 and 3 are right and left plans views, respectively, of the rechargeable battery pack of FIG. 1;

FIG. 4 is a top plan view of the rechargeable battery pack of FIG. 1;

FIG. 5 is a lower plan view of the rechargeable battery pack of FIG. 1;

FIG. 6 is a front end view of the rechargeable battery pack of FIG. 1; and,

FIG. 7 is a rear plan view of the rechargeable battery pack of FIG. 1. 

I claim the ornamental design for the rechargeable battery pack, as shown and described. 